Auto lift



Oct. 23, 1923.

E; H. KELLEY ET AL AUTO LIFT Filed March 51. 1922 2 Sheets-Sheet 1 IWITNESSES A TTOR/VEYS Oct, 23,1923. 1,471,695, E. H. KELLEY ET AL ATTORNEYS Patented Qct. 23, 1923. i

s'rras EMMOB- HAMILTON KELLEY- AND GEORGE 1 lanes PATENT QFFrcE.

ALvA'sTEwART, an, or soUTH Bnow s VILLE, PENNSYLVANIA.

AU O Application filed March 31,

' ing to the lever arrangement and simplicity of construction.

Another object is to provide such a lift or jack which is adapted togive quick and ef fective action with the application of the leastamount of energy.

Other objects and advantages of the invention reside in certain novelfeatures of construction, combination and arrangement of parts whichwill be hereinafter more fully described and claimed, reference beinghad to the accompanying drawings, in which- Figure 1 is a side elevationof the device shown in its extreme operative position,

Figure 2 is a similar view showing the device in inoperativepbsitionwith thelever extendedupwardly to serve as a handle to push thedevice into and out of engagement with the work,

Figure 3 is a top plan perspective view of r the device,

Figure 4 is a detail view of the aXle saddle or support member, and,

Figure 5 is a detail perspective view of one of the operating levers orhandles.

As shown in the drawings, the base rails 1 are spaced apart and rigidlyconnected together by the front and rear cross tie bars 3 and 4respectively, forming'a base frame for the jack or lift. This base frameis preferably composed of units of angle irons as shown but it is to beunderstood that any suitable construction may be employed to givestrength to the base frame.

Two similar upright supports 5 are rigidly-secured at their lower endsto the front end of the base as shown and are braced by the bracingirons 7 respectively. Lifting bars 9 forming a tiltable platform arepivotally connected to the upper portions of up- 7 rights 5 by bolts 11,

LIFT.

192;. Serial No. 548,459.

Each of the supportingbars is provided with an axle saddle or supportingmember as indicated by reference numeral'13f These axle saddles may beformed of sheet metal and are stepped as at for adjustment purposes.

Toggle links 16 and 17 are pivotally connected at their'overlapping endsto each other by means of the pins 18, and are in turn pivotallyconnected at their outer ends to the base at 19 and to the lifting barsas at 20 respectively so that the lifting bars may be swung into and out,ofengagement with the objectto be lifted, by merely swinging the linksupon the center pin 18.

The. swin of the. links is accomplished by means of handles or operatinglevers 21 which, as shown in Figure 5, are preferably formed of twostrips of stout metal clamped together by rivets. The rear or outer endsof the levers are substantially straight forming convenient handles formoving the device about the floor, but the front or inner extrem, ities22 which are spaced apart, are curved to allow the handles to assume a.proper operative position when the lifting bars are down. The curvedextremities 22 are pivotally connected at their front ends to thelifting bars.

9 by means of the bolts 20.-

The operating levers 21 have. a rigid ex: tension 24 riveted between itssections as shown and extending forwardly in substantial alinement withthe handle portion. This extension not only serves as a support for thelifting bars 9, when they are tilted into operative position, but alsoacts as a lock in holding the pivot point 18 slightly past a dead centeror an imaginary line drawn from bolts 19 to 20, thus forming aneffective support for the bars 9.

Horizontally elongated vertical openings areformed in the levers 21 asindicated at 23, Figure 5, so that the levers will fit over the cornersof the vertical flange of the base ironsl locking the lever and togglelinks in position and at the same time brace the levers against lateralmovement.

In order that the device maybe easily transported from place to place weprovide rollers or casters 25, at the front and rear ends of the baserails 1.

In use, the device is moved under the work to be lifted, as, forinstance, an automobile. When the levers 21 are moved downwardly ontheir fulcrum at 20, the extensions 24 which are carried by the leversand connected to the overlapped ends of the toggle links at their pointof connection by the same pivot pin18, swing with the leversand movingforwardly and upwardly engagethe bars 9 and forces the pivot points 19and QO further apart. In this way the platform is caused to engage thework in one of the steps 15 and lift it.

It should be noted that the point 18 will move slightly past a deadcenter on an imaginary straight line drawn from the centers of pivots 19and-20. In this manner the supporting bars are securely held or lockedin place.

It is to be understood that various changes in the size, shape, andarrangement of parts of our invention may be resorted to withoutdeparting from the spirit'of the invention or the scope of the claims.

We claim 1. A lifting device comprising a supporting rail, a tiltablemember carried on said rail, means carried by the tiltable member forengaging an object to be lifted and means for tilting the tiltablemember, said means including a swinging lever bar pivot- .ally connectedat one end to the tilta-ble member, and provided with a forward extension to le links connectin the tiltable member and the supportingrail, saidtoggle links being connected at their junction to the saidextension of the swinging lever bar.

2. A jack comprising a base, a tiltable member pivoted thereto, togglelinks connected at their outer ends to the base and tiltable member andhaving their adjacent ends pivotally connected, and a bent lever barconnected at its bent end to said tiltable. member and having a forwardextension pivoted to the adjacent ends of said links porting railpivotally connected at its front endto said standard, toggle linkspivotally connected at their outer ends to said base rail and supportingrail adjacent their rear ends, said toggle links pivotally connected attheir inner ends, a bent lever pivotally connected at its bent end tosaid supporting rail adjacent its rear end, said lever having a rigidextension projecting forwardly at the bend thereof, said extensionpivotally connected to said toggle links at their junction, the forwardend of said extension adapted to engage the supporting rail and hold thesame in its elevated operative position.

4. A jack comprising a base rail, a rigid standard at its front end, alifting and supporting rail pivotally connected at its front to saidstandard, toggle links pivotally connected at their outer ends to thebase and supporting rails respectively, and pivotally connected togetherat their inner ends, a bent lever pivotally connected at its bent end tothe lifting rail, a rigid extension projecting forwardly from said bentlever at its bend, said extension pivotally connected forwardly of thebend to the toggle links at their junction, the forward end of saidextension adapted to engage the lifting rail and hold same in itselevated operative position, said lever having an opening intermediateits ends adapted to fit over the rear end of the base rail and lock thelever against longitudinal and lateral movement.

EMMOR HAMILTON KELLEY. GEORGE ALVA STElVART, J12.

